package collection;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionOperDemo {
    public static void main(String[] args) {
        Collection c1 = new ArrayList();
        c1.add("java");
        c1.add("c++");
        c1.add("linux");
        System.out.println("c1:"+c1);
        Collection c2 = new ArrayList();
        c2.add("java");
        c2.add("c++");
        c2.add("linux");
        System.out.println("c2:"+c2);
        Collection c3 = new ArrayList();
        c3.add("java");
        c3.add("c++");
        c3.add("php");
        System.out.println("c3:"+c3);

        c1.addAll(c2);
        System.out.println("c1:"+c1);
        System.out.println("c2:"+c2);
        System.out.println("--------");
        boolean contains = c1.containsAll(c3);//判断c1中是否包含c3中所有元素
        System.out.println("是否包含："+contains);//false
        /*
        //取交集:c1中仅保留与c3共有的元素，而c3不变
        c1.retainAll(c3);
        System.out.println("c1:"+c1);
        System.out.println("c3:"+c3);
         */

        //删交集:将c1中与c3共有的元素删除，而c3不变
        c1.removeAll(c3);
        System.out.println("c1:"+c1);
        System.out.println("c3:"+c3);







    }
}
